Sympotom: Among the most common problems with any make of printer are paper jams. A printer will jam for any number of reasons: It's dirty, the wrong paper type is being used, or the rollers on the printer that feed the paper through its pathway are worn down.
Solutions: While cleaning the printer periodically and using the correct paper type are easy fixes, roller replacement can be a difficult job depending on the model of printer. For some printers, the rollers are easily accessible, but you'll need to completely tear down other models to remove the rollers. Regardless of the cause, when removing a paper jam, always pull the paper in the direction of the paper path, because pulling it backwards can severely damage the printer.
Others:Certain printers are more susceptible to paper jams than others. In my experience, any printer that holds the paper vertically and then pulls it down through the printer invariably ends up having paper jam problems. These models aren't designed for heavy use, but many organizations make use of them on individual systems and should be aware of this flaw.